You will have to call Browning.
Impossible to answer. Could be 100-25000 USD
Impossible to value with only a serial number.
Rifle or pistol?
Made in 1970, what is your question?
Try the bbl and frame
1971
1975
Browning did not make the Model 70, Winchester did. Also, the serial number is not a valid Browning serial number for a 7mm Magnum rifle. Please doublecheck your information.
50-1000 usd
50-600 usd
1914-1955. Browning does not have sn's available.
The model is called the "BAR" which stands for Browning Automatic Rifle. This gun was made in 1971